10 W TRIAC dimmable PFC Buck-Boost LED driver

This design example report presents a 10 W TRIAC dimmable high frequency, power factor corrected buck-boost LED driver employing LYTSwitch™-3 LYT3316D. This LED driver operates in an input voltage ranging from 90 VAC to 132 VAC and delivers an output voltage ranging from 36 V to 40 V at 260 mA. It features single-stage power factor correction, accurate constant LED current regulation, low cost and low component count for compact PCB solution, and integrated protection features.

The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, design spreadsheet and performance data.